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Displaying results 1 - 4 of 4
  • Benchmarking Temporal Surveillance Techniques

    Content Type: Abstract

    Benchmarking of temporal surveillance techniques is a critical step in the development of an effective syndromic surveillance system. Unfortunately, holding “bakeoffs” to blindly compare approaches is a difficult and often fruitless enterprise, in… read more
    … is a difficult and often fruitless enterprise, in part due to the parameters left to the final user for tuning. In … is a diffi- cult and often fruitless enterprise, in part due to the parameters left to the final user for tuning. In … cu- mulative false positive at day seven=0.02. RESULTS All three viewpoints are compared theoretically and then …
  • Temporal-Spatial Surveillance Techniques from Non-Homogenous Random Geometric Graphs

    Content Type: Abstract

    Graph theory concepts are well established in epidemiology, with particular success as a description of agent-based modeling. An agent-based viewpoint leads to conclusions about the spatial distribution of links: infection is more likely among… read more
    … (CHB), the IDD provides inadequate power. Emergency De- partment (ED) chief complaints from 1/1/2000- 12/31/2004 … random graph, points are scattered across a region. All points within a specified radius are connected, and the …
  • Characterizing Repeated Outbreak Patterns in Influenza Time Series

    Content Type: Abstract

    In some influenza seasons, morbidity and mortality closely follow the expected seasonal variation. In these years, approaches such as Serflingís model and seasonal-based syndromic outbreak detectors, in use in EARS, work well. In other years,… read more
    … BACKGROUND Time-frequency analysis techniques allow us to de- compose influenza time series to isolate and study these …
  • Detecting Coherent Structures in Syndromic Time Series Using Wavelets

    Content Type: Abstract

    Temporally localized outbreaks occur in the presence of a complex background, greatly complicating both retrospective and real-time detection. Numerous techniques have been proposed for adjusting thresholds to account for this variable background.… read more
    … series measurement. See [2] for details. Retrospective de- tection is performed in a fixed window, while real- time …